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Detection of Metastabile Defective Regions in Ion-Implanted Silicon by Means of Metal Gettering

Published online by Cambridge University Press:  15 February 2011

R. Kögla
Affiliation:
Forschungszentrum Rossendorf, e.V.,FWI, POB 510119, D-01314 Dresden, Germany
M. Posselt
Affiliation:
Forschungszentrum Rossendorf, e.V.,FWI, POB 510119, D-01314 Dresden, Germany
R. A. Yankov
Affiliation:
Forschungszentrum Rossendorf, e.V.,FWI, POB 510119, D-01314 Dresden, Germany
J. R. Kaschny
Affiliation:
Forschungszentrum Rossendorf, e.V.,FWI, POB 510119, D-01314 Dresden, Germany
P. Werner
Affiliation:
Max Planck Institut für Mikrostrukaphysik, Weinberg 2, POB 06110 Haale/Saale, Germany
A. B. Danilin
Affiliation:
Center for Analysis of Substances, 1 Electrodnaya Street, 111524 Moscow, Russia
W. Skorupa
Affiliation:
Forschungszentrum Rossendorf, e.V.,FWI, POB 510119, D-01314 Dresden, Germany
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Abstract

High-energy, self-ion implantation has been used to form deep gettering layers in Si. Subsequently samples have been contaminated with Cu and subjected to heat treatment. The residual defects act as gettering centres for Cu. The decoration of defects byCu making them detectable by secondary ion mass spectromety analysis. Metastable defect complexes have been detected which, because of their small size, are not directly detectable by other analytical techniques such as transmission electron microscopy and MeV-particle channeling. These defects are probably of interstitial type and have been found mainly midway between the sample and the projected ion range, i.e. around Rp/2. The gettering ability of these small defect complexes may largely exceed that of the post-anneal damage at the projected i.e range, Rp. The results obtained demonstrate that by means of metal gettering the formation, growth and dissolution of very small defect complexes in ion-implanted Si can be studied.

Type
Research Article
Copyright
Copyright © Materials Research Society 1997

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References

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Detection of Metastabile Defective Regions in Ion-Implanted Silicon by Means of Metal Gettering
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